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i965: Implement support for ARB_clip_control.

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Switch between the two clip space definitions already available
in hardware. Update winding order dependent state according
to the clip control state.
This change did not introduce new piglit quick.test regressions on
an Ivybridge Mobile and a GM45 Express chipset.
Also it enables and passes the clip-control and clip-control-depth-precision
tests on these two chipsets.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Mathias Froehlich <Mathias.Froehlich@web.de>
This commit is contained in:
Mathias Fröhlich
2015-03-29 16:52:57 +02:00
committed by Mathias Froehlich
parent 107ae27e57
commit fdd90fcb15
11 changed files with 21 additions and 16 deletions
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docs/relnotes/10.6.0.html
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@@ -51,6 +51,7 @@ Note: some of the new features are only available with certain drivers.
<li>GL_ARB_instanced_arrays on freedreno</li>
<li>GL_ARB_pipeline_statistics_query on i965, nv50, nvc0, r600, radeonsi, softpipe</li>
<li>GL_EXT_draw_buffers2 on freedreno</li>
<li>GL_ARB_clip_control on i965</li>
</ul>
<h2>Bug fixes</h2>